Home / 711,406.52-981,716.13-405,581.39

Finding the Fourth Proportional to 711,406.52, 981,716.13 and 405,581.39

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Solution

The fourth proportional to 711,406.52, 981,716.13 and 405,581.39 is: 559,688.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,406.52 : 981,716.13 = 405,581.39 : x
  2. Step 2: Convert to fraction form
    711,406.52/981,716.13 = 405,581.39/x
  3. Step 3: Cross multiply
    711,406.52x = 981,716.13 × 405,581.39
  4. Step 4: Simplify right side
    711,406.52x = 398,165,787,682.24
  5. Step 5: Solve for x
    x = 398,165,787,682.24/711,406.52
  6. Step 6: Final answer
    x = 559,688.14

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.